<!Doctype html>
<html xmlns=http://www.w3.org/1999/xhtml>
<head>
    <meta http-equiv=Content-Type content="text/html;charset=utf-8">
    <title>less code , less bug</title>

    <style type="text/css">
.dotted {border-style: dotted;
margin-top: 36px;}
.exp{ border-bottom:1px dashed #F00}
div {padding: 10px;}
.redcolor{ color:#F00;}


    </style>

</head>
<body>




